Out here, at the far edge of the solar system, even a little tug from the gravity of a passing star can liberate some of these comets from their gravitational bondage to the Sun.
Diluarsini,ditepian daritatasurya bahkantarikankecildari gravitasibintangyanglewat dapatmembebaskan beberapakometitu dariikatangravitasimereka denganMatahari.